SB20260816315 - Double free in Linux kernel sunrpc
Published: August 16, 2026
Security Bulletin ID
SB20260816315
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Double free (CVE-ID: CVE-2026-72220)
CWE-ID: CWE-415 - Double Free
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to double free in sunrpc request handling when processing RPC requests. A remote attacker can send crafted RPC traffic that triggers stale rq_procinfo release handling to cause a denial of service.
The issue can also result in a use-after-free condition if reused state from a previous RPC is referenced.
Remediation
Install update from vendor's website.